package com.spring.sunflower;

import androidx.annotation.Nullable;

import com.google.gson.Gson;
import com.google.gson.TypeAdapter;
import com.google.gson.reflect.TypeToken;

import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import okhttp3.RequestBody;
import okhttp3.ResponseBody;
import retrofit2.Converter;
import retrofit2.Retrofit;

/**
 * Created by Kevin on 2021/11/18<br/>
 * <p>
 * Describe:<br/>
 */
public final class ResponseConverterFactory extends Converter.Factory {
    private final Gson gson;

    public static ResponseConverterFactory create(Gson gson) {
        return new ResponseConverterFactory(gson);
    }

    public ResponseConverterFactory create() {
        if (gson == null) throw new NullPointerException("gson == null");
        return new ResponseConverterFactory(gson);
    }

    private ResponseConverterFactory(Gson gson) {
        this.gson = gson;
    }

    @Nullable
    @Override
    public Converter<?, RequestBody> requestBodyConverter(Type type, Annotation[] parameterAnnotations, Annotation[] methodAnnotations, Retrofit retrofit) {
        return super.requestBodyConverter(type, parameterAnnotations, methodAnnotations, retrofit);
    }

    @Nullable
    @Override
    public Converter<ResponseBody, ?> responseBodyConverter(Type type, Annotation[] annotations, Retrofit retrofit) {
        TypeAdapter<?> adapter = gson.getAdapter(TypeToken.get(type));
        return new ResponseBodyConverter<>(adapter);
    }

}
